Evidence map›Paper›PMID 26135716›Full record

ReviewHippocampus2015

Hippocampal sharp wave-ripple: A cognitive biomarker for episodic memory and planning.

György Buzsáki

Open access · bronzeAbstract readReview
In one paragraph

Review in Hippocampus, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 932 papers.

0numbers the graph read from it
0cells of the map it votes in
932citing papers in PubMed
43.9field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

932 citing papers in PubMed, 1,826 citations in OpenAlex.

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  16. Role of the Amygdala in the Complex Relationship Between Sleep and Anxiety.International journal of molecular sciences · 2026
    Review
  17. Article
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872 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

György BuzsákiThe Neuroscience Institute, School of Medicine and Center for Neural Science, New York University, New York, New York.
New York University · US

Funding

The Hippocampal Interneuron NetworkR01MH054671 · NIMH · RUTGERS THE STATE UNIV OF NJ NEWARK · PI BUZSAKI, GYORGY · 1997 to 2017
$5.2M
Brain rhythms-assisted memory enhancementR01MH107396 · NIMH · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI BUZSAKI, GYORGY, DEVINSKY, ORRIN · 2015 to 2019
$3.3M
Towards a Complete Description of the Circuitry Underlying Memory replay.U01NS090583 · NINDS · UNIVERSITY OF CALIFORNIA-IRVINE · PI SOLTESZ, IVAN · 2014 to 2016
$2.1M
Modular High-Density Optoelectrodes for Local Circuit Analysis - Administrative SupplementU01NS090526 · NINDS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI BUZSAKI, GYORGY, WISE, KENSALL DAVID · 2014 to 2016
$2.0M
CRNCS: Identification and Plasticity of Neuronal MicrocircuitsR01MH102840 · NIMH · CITY COLLEGE OF NEW YORK · PI AMARASINGHAM, ASOHAN · 2013 to 2015
$1.2M
Neural Recording Arrays with Distributed Cellular-Level Optical StimulationR21EB019221 · NIBIB · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI YOON, EUISIK · 2014 to 2015
$398k
NIBIB NIH HHS R21 EB019221NIMH NIH HHS MH107396NIMH NIH HHS MH54671NIMH NIH HHS R01 MH054671NIMH NIH HHS R01 MH102840NIMH NIH HHS R01 MH107396NINDS NIH HHS 5U01NS090583NINDS NIH HHS NS075015NINDS NIH HHS U01 NS090526NINDS NIH HHS U01 NS090583
6 · The paper itself

Abstract

Sharp wave ripples (SPW-Rs) represent the most synchronous population pattern in the mammalian brain. Their excitatory output affects a wide area of the cortex and several subcortical nuclei. SPW-Rs occur during "off-line" states of the brain, associated with consummatory behaviors and non-REM sleep, and are influenced by numerous neurotransmitters and neuromodulators. They arise from the excitatory recurrent system of the CA3 region and the SPW-induced excitation brings about a fast network oscillation (ripple) in CA1. The spike content of SPW-Rs is temporally and spatially coordinated by a consortium of interneurons to replay fragments of waking neuronal sequences in a compressed format. SPW-Rs assist in transferring this compressed hippocampal representation to distributed circuits to support memory consolidation; selective disruption of SPW-Rs interferes with memory. Recently acquired and pre-existing information are combined during SPW-R replay to influence decisions, plan actions and, potentially, allow for creative thoughts. In addition to the widely studied contribution to memory, SPW-Rs may also affect endocrine function via activation of hypothalamic circuits. Alteration of the physiological mechanisms supporting SPW-Rs leads to their pathological conversion, "p-ripples," which are a marker of epileptogenic tissue and can be observed in rodent models of schizophrenia and Alzheimer's Disease. Mechanisms for SPW-R genesis and function are discussed in this review.

Indexed as

BiomarkersMemory, EpisodicAnimalsBrain WavesExecutive FunctionHippocampusHumansBiomarkersepilepsyimagininglearningmemoryplanning

Identifiers

PMID26135716
PMCPMC4648295
OpenAlexW1770958704

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.